*KAPPA
11.1 *KAPPA: Specify the material parameters and for mass diffusion driven by
gradients of temperature and equivalent pressurestress, respectively.
This option is used to introduce temperature- and pressure-drive n mass diffusion. It must appea r immediately
afterthe *DIFFUSIVITY option. Foreach use of the *DIFFUSIVITY option, *KAPPAcan be used once with
TYPE=TEMPand once with TYPE=PRESS. The *KAPPA, TYPE=TEMP and *DIFFUSIVITY,LAW=FICK
options are mutually exclusive.
Product: ABAQUS/Standard
Type: Model data
Level: Model
References:
•“Diffusivity,”Section 20.5.1 of the ABAQUS Analysis User’s Manual
•*DIFFUSIVITY
Optional parameters:
DEPENDENCIES
Set this parameter equal to the number of field variables included in the definitionof or .If
this parameter is omitted, or is assumed not to depend on any field variables but may still
depend on concentrationand temperature. See“Specifying field variable dependence” in “Material
data definition,” Section16.1.2 of the ABAQUS Analysis User’s Manual, for more information.
TYPE
Set TYPE=TEMP (default) to define (governing mass diffusion caused by temperature
gradients). Set TYPE=PRESS to define (governing mass diffusion caused by gradients of the
equivalent pressure stress).
Data lines to define the Soret effect factor,ks(TYPE=TEMP):
First line:
1. Soreteffect factor, .(UnitsofF
1/2L−1.)
2. Concentration, c.
3. Temperature, .
4. Firstfield variable.
5. Second field variable.
6. Etc.,uptofivefieldvariables.
11.1–1
ABAQUS Version 6.1 Module: ID:
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